The Seattle Corporation has been presented with an investment opportunity which will yield cash flows of $30,000 per year in Years 1 through 4, $35,000 per year in Years 5 through 9, and $40,000 in Year 10. This investment will cost the firm $150,000 today, and the firm's cost of capital is 10%. Assume cash flows occur evenly during the year, 1/365th each day. What is the payback period for this investment?

1. 4.35 years

2. 3.35 years

3. 3.72 years

4. 4.86 years

5. 5.23 years